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I have a 05 f150 and when running my water pressure is around 10 psi. Some times it drops below 10 if the motor is trimed up to much. Will a shallow blaster help this or is this normal? The water pumps is changed every year.
Trimming it up will decrease water pressure, water pump needs to be submerged below water line. Might check pressure control valve and thermostat to see if stuck open.
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